From: | tgl(at)svr1(dot)postgresql(dot)org (Tom Lane) |
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To: | pgsql-committers(at)postgresql(dot)org |
Subject: | pgsql-server/src backend/nodes/copyfuncs.c bac ... |
Date: | 2004-01-04 03:51:52 |
Message-ID: | 20040104035152.76CACD1B467@svr1.postgresql.org |
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Lists: | pgsql-committers |
CVSROOT: /cvsroot
Module name: pgsql-server
Changes by: tgl(at)svr1(dot)postgresql(dot)org 04/01/03 23:51:52
Modified files:
src/backend/nodes: copyfuncs.c outfuncs.c
src/backend/optimizer/path: clausesel.c costsize.c indxpath.c
src/backend/optimizer/plan: initsplan.c
src/backend/optimizer/prep: prepunion.c
src/backend/optimizer/util: clauses.c restrictinfo.c
src/include/nodes: relation.h
src/include/optimizer: clauses.h cost.h
Log message:
Merge restrictlist_selectivity into clauselist_selectivity by
teaching the latter to accept either RestrictInfo nodes or bare
clause expressions; and cache the selectivity result in the RestrictInfo
node when possible. This extends the caching behavior of approx_selectivity
to many more contexts, and should reduce duplicate selectivity
calculations.
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